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15
Math.TechQA.Club
2026-03-22 03:16:09
48
Views
For $A \in L(V,V)$ where $(V, (\cdot,\cdot))$ is an inner prod space, $\exists !$ $z(x)$ such that $(x,Ay) = (z(x), y)$.
Published on
22 Mar 2026 - 3:16
#linear-algebra
#vectors
#linear-transformations
#inner-products
1.2k
Views
Linear Algebra: Cross Product w/ Matrices
Published on
17 Mar 2026 - 12:20
#linear-algebra
#matrices
#vectors
#cross-product
105
Views
Prove that $perp_\vec{n}(\vec{x})=\frac{\vec{x}\cdot\vec{a}}{||\vec{a}||^2}\vec{a}+\frac{\vec{x}\cdot\vec{b}}{||\vec{b}||^2}\vec{b}$
Published on
03 Feb 2018 - 18:30
#linear-algebra
#vectors
3k
Views
What's an intuitive explanation behind cross products being vectors, when dot products are not?
Published on
25 Mar 2026 - 4:19
#linear-algebra
#vectors
#intuition
#cross-product
37
Views
Different vector "product" and its geometric significance
Published on
04 Feb 2018 - 13:01
#geometry
#vectors
105
Views
Circumcircle of triangle $ABC$
Published on
04 Feb 2018 - 14:23
#vectors
919
Views
Linear Algebra - are these subspaces?
Published on
04 Feb 2018 - 23:24
#linear-algebra
#vectors
153
Views
if $\vec{x},\vec{y} \in \Bbb{R^4}$ with $\vec{x},\vec{y}$ being linearly independent prove that there exists a $\vec{a}$ that is orthogonal to both?
Published on
25 Mar 2026 - 6:13
#linear-algebra
#vectors
#orthogonality
192
Views
Slope of a line as a row vector
Published on
22 Mar 2026 - 5:12
#linear-algebra
#vectors
#slope
35
Views
Solving vector equations.
Published on
05 Feb 2018 - 7:43
#vectors
492
Views
Proving that the inverse of a matrix $H$ is itself
Published on
25 Mar 2026 - 1:31
#linear-algebra
#matrices
#vectors
#inverse
35
Views
Solving vector equations
Published on
05 Feb 2018 - 10:34
#vectors
359
Views
Understanding the equality in triangle inequality.
Published on
25 Mar 2026 - 1:34
#complex-numbers
#vectors
#triangles
52
Views
HitTest - Calculate offset created by perspective.
Published on
17 Mar 2026 - 11:35
#trigonometry
#vectors
#3d
267
Views
Similarity of nested triangles
Published on
25 Mar 2026 - 1:35
#geometry
#vectors
#euclidean-geometry
#triangles
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